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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[DOCS-13391] Clarify documentation for $ne/$not:null+$elemMatch</title>
                <link>https://jira.mongodb.org/browse/DOCS-13391</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;
&lt;p&gt;This is a follow-up to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31876&quot; title=&quot;$ne has inconsistent behavior&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31876&quot;&gt;&lt;del&gt;SERVER-31876&lt;/del&gt;&lt;/a&gt; and HELP-13248.&lt;/p&gt;

&lt;p&gt;It is asserted that &quot;$ne is just $not&quot; which is not clear from current documentation. Users see some confusing behavior, but it&apos;s not clear what the best change to suggest is. Hopefully this can be determined with some follow-up.&lt;/p&gt;

&lt;p&gt;Some notes from HELP-13248:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://docs.mongodb.com/manual/tutorial/query-array-of-documents/index.html#specify-a-query-condition-on-a-field-embedded-in-an-array-of-documents&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/tutorial/query-array-of-documents/index.html#specify-a-query-condition-on-a-field-embedded-in-an-array-of-documents&lt;/a&gt;&lt;br/&gt;
&quot;has at least one embedded document&quot;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/ne/index.html#op._S_ne&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/reference/operator/query/ne/index.html#op._S_ne&lt;/a&gt;&lt;br/&gt;
&quot;$ne selects the documents where the value of the field is not equal to the specified value. This includes documents that do not contain the field.&quot;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://docs.mongodb.com/manual/reference/operator/query/not/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/reference/operator/query/not/&lt;/a&gt;&lt;br/&gt;
&quot;$not performs a logical NOT operation on the specified &amp;lt;operator-expression&amp;gt; and selects the documents that do not match the &amp;lt;operator-expression&amp;gt;. This includes documents that do not contain the field.&quot;&lt;/p&gt;

&lt;p&gt;&quot;the $not operator only affects other operators and cannot check fields and documents independently. So, use the $not operator for logical disjunctions and the $ne operator to test the contents of fields directly.&quot;&lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="1130846">DOCS-13391</key>
            <summary>Clarify documentation for $ne/$not:null+$elemMatch</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="12300">Won&apos;t Do</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="eric.sedor@mongodb.com">Eric Sedor</reporter>
                        <labels>
                            <label>docs-query</label>
                            <label>grab-bag</label>
                    </labels>
                <created>Wed, 5 Feb 2020 18:17:42 +0000</created>
                <updated>Mon, 30 Oct 2023 20:28:14 +0000</updated>
                                                            <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="4940403" author="edu.bot" created="Mon, 31 Oct 2022 16:04:43 +0000"  >&lt;p&gt;Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!&lt;/p&gt;</comment>
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